That's what one would precisely expect, yet after following the directions (if the quote bleow can be considered directions) I received a successful notification. It's been a week, and I still hold two rankings, 83 and 200-and-something.

The real bummer is that the most recent slices were obtained while in Australia. I doubt I'll get back to that location, and had the transfer worked when it said it did I would have been able to add those to my "older" slices. Now I'm faced with loosing one of the two.

To quote the Transfer Phone page:

Transfer PhoneYou may transfer your slices to a new phone. WARNING: this is a one-way, non-reversible operation. What will happen: your new phone will act like it's slicing on the old phone. (All tracks are stored locally so that transfer depends on your phone etc.) All slices you have done on your new phone before this transfer will not be transferred. They will be orphaned. You must have created two accounts and linked them, one per phone.